package xin.mashibo.pattern.decorator;

/**
 * @author MaShibo
 * 日期 :  2019/1/24
 */
public abstract class Display {

    public abstract int getColumns();

    public abstract int getRows();

    public abstract String getRowText(int row);


    public final void show() {
        for (int i = 0; i < getRows(); i++) {
            System.out.println(getRowText(i));
        }
    }


}
